Antenna module, terminal, control method and device and storage medium

ABSTRACT

An antenna module for a terminal includes an antenna and a Radiated Spurious Emission (RSE) improvement component. The antenna includes a feed source, a ground point, and at least one radiation arm. The RSE improvement component is coupled to the antenna for suppressing high order harmonics generated by the antenna when the antenna operates in a target frequency band, and includes a radio frequency switch having a terminal connected to the at least one target radiation arm, and another terminal connected to the ground point; or, the radio frequency switch is connected in series into the at least one target radiation arm of the antenna. The at least one target radiation arm is a radiation arm by which the antenna radiates the high order harmonics outward.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a continuation of U.S. patent applicationSer. No. 16/586,093 filed on Sep. 27, 2019, which claims priority toChinese Patent Application No. 201910363070.6 filed on Apr. 30, 2019.The disclosures of these applications are hereby incorporated byreference in their entirety.

BACKGROUND

A terminal having a wireless communication function, such as a mobilephone, is usually equipped with an antenna through which a radiofrequency signal is transmitted and received.

Radiated Spurious Emission (RSE) test is an important test, which mayneed to be conducted for terminal certification in various countries.Typically, technicians reduce the transmission power of a terminalantenna and thereby reduce the spurious emission of the terminal, so asto satisfy the requirements of the RSE test.

SUMMARY

The present disclosure relates generally to antenna technologies, andmore specifically to an antenna module, a terminal, a control method, acontrol device and a storage medium.

Embodiments of the present disclosure provide an antenna module, aterminal, a control method, a control device and a storage medium.

According to a first aspect of embodiments of the present disclosure,there is provided an antenna module. The antenna module is applied to aterminal. The antenna module includes an antenna and a Radiated SpuriousEmission (RSE) improvement component;

wherein:

the antenna includes a feed source, a ground point, and at least oneradiation arm;

the RSE improvement component is coupled to the antenna for suppressinghigh order harmonics generated by the antenna when the antenna operatesin a target frequency band.

According to some embodiments, the RSE improvement component includes aradio frequency switch, a terminal of the radio frequency switch isconnected to the at least one target radiation arm of the antenna, andanother terminal of the radio frequency switch is connected to theground point; or, the radio frequency switch is connected in series intothe at least one target radiation arm of the antenna;

wherein the at least one target radiation arm is a radiation arm bywhich the antenna radiates the high order harmonics outward.

According to some embodiments, the RSE improvement component includes afilter circuit and a control switch, the filter circuit is configured tosuppress the high order harmonics, and the control switch is configuredto control a working state of the filter circuit.

According to some embodiments, the filter circuit is a band stop filtercircuit;

wherein the band stop filter circuit is connected in series into the atleast one target radiation arm of the antenna; or, a terminal of theband stop filter circuit is connected to the at least one targetradiation arm of the antenna, and another terminal of the band stopfilter circuit is connected to the feed source; wherein the at least onetarget radiation arm is a radiation arm by which the antenna radiatesthe high order harmonics outward;

wherein the control switch is connected in parallel with the band stopfilter circuit.

According to some embodiments, the filter circuit is a band pass filtercircuit;

wherein a terminal of the band pass filter circuit is connected to theat least one target radiation arm of the antenna, and another terminalof the band pass filter circuit is connected to the ground point of theantenna; wherein the at least one target radiation arm is a radiationarm by which the antenna radiates the high order harmonics outward;

wherein the control switch is connected in series with the band passfilter circuit.

According to some embodiments, the antenna is formed on a flexiblecircuit, and the RSE improvement component is integrated in the flexiblecircuit.

According to a second aspect of embodiments of the present disclosure,there is provided a terminal. The terminal includes a processingcomponent and an antenna module. The antenna module includes an antennaand a Radiated Spurious Emission (RSE) improvement component;

wherein:

the antenna includes a feed source, a ground point, and at least oneradiation arm;

the RSE improvement component is coupled to the antenna for suppressinghigh order harmonics generated by the antenna when the antenna operatesin a target frequency band;

the processing component is configured to control the RSE improvementcomponent to be in a working state when the antenna operates in thetarget frequency band.

According to some embodiments, the RSE improvement component includes aradio frequency switch, a terminal of the radio frequency switch isconnected to the at least one target radiation arm of the antenna,another terminal of the radio frequency switch is connected to theground point of the antenna, and the at least one target radiation armis a radiation arm by which the antenna radiates the high orderharmonics outward; wherein the processing component is configured tocontrol the radio frequency switch to be turned on when the antennaoperates in the target frequency band; or

wherein the radio frequency switch is connected in series into the atleast one target radiation arm of the antenna, the at least one targetradiation arm is a radiation arm by which the antenna radiates the highorder harmonics outward, and the processing component is configured tocontrol the radio frequency switch to be turned off when the antennaoperates in the target frequency band.

According to some embodiments, the RSE improvement component includes afilter circuit and a control switch, the filter circuit is configured tosuppress the high order harmonics, and the control switch is configuredto control a working state of the filter circuit.

According to some embodiments, the filter circuit is a band stop filtercircuit;

wherein the band stop filter circuit is connected in series into the atleast one target radiation arm of the antenna; or, a terminal of theband stop filter circuit is connected to the at least one targetradiation arm of the antenna, and another terminal of the band stopfilter circuit is connected to the feed source; wherein the at least onetarget radiation arm is a radiation arm by which the antenna radiatesthe high order harmonics outward;

wherein the control switch is connected in parallel with the band stopfilter circuit;

wherein the processing component is configured to control the controlswitch to be turned off when the antenna operates in the targetfrequency band.

According to some embodiments, the filter circuit is a band pass filtercircuit;

wherein a terminal of the band pass filter circuit is connected to theat least one target radiation arm of the antenna, and another terminalof the band pass filter circuit is connected to the ground point of theantenna; wherein the at least one target radiation arm is a radiationarm by which the antenna radiates the high order harmonics outward;

wherein the control switch is connected in series with the band passfilter circuit;

wherein the processing component is configured to control the controlswitch to be turned on when the antenna operates in the target frequencyband.

According to a third aspect of embodiments of the present disclosure,there is provided a control method. The control method is applied in aprocessing component of a terminal. An antenna module of the terminalincludes an antenna and a Radiated Spurious Emission (RSE) improvementcomponent;

wherein the method includes:

obtaining a working frequency band of the antenna; and

controlling the RSE improvement component to be in a working state whenthe working frequency band of the antenna is a target frequency band;

wherein the RSE improvement component is configured to suppress highorder harmonics generated by the antenna.

According to some embodiments, the RSE improvement component includes aradio frequency switch, a terminal of the radio frequency switch isconnected to the at least one target radiation arm of the antenna,another terminal of the radio frequency switch is connected to theground point of the antenna, and the at least one target radiation armis a radiation arm by which the antenna radiates the high orderharmonics outward;

wherein controlling the RSE improvement component to be in a workingstate, includes:

controlling the radio frequency switch to be turned on.

According to some embodiments, the RSE improvement component includes aradio frequency switch, the radio frequency switch is connected inseries into the at least one target radiation arm of the antenna, andthe at least one target radiation arm is a radiation arm by which theantenna radiates the high order harmonics outward;

wherein controlling the RSE improvement component to be in a workingstate, includes:

controlling the radio frequency switch to be turned off.

According to some embodiments, the RSE improvement component includes afilter circuit and a control switch, and the filter circuit isconfigured to suppress the high order harmonics;

wherein controlling the RSE improvement component to be in a workingstate, includes:

controlling the control switch to switch the filter circuit to a workingstate.

According to some embodiments, the filter circuit is a band stop filtercircuit;

wherein the band stop filter circuit is connected in series into the atleast one target radiation arm of the antenna; or, a terminal of theband stop filter circuit is connected to the at least one targetradiation arm of the antenna, and another terminal of the band stopfilter circuit is connected to the feed source; wherein the at least onetarget radiation arm is a radiation arm by which the antenna radiatesthe high order harmonics outward, and the control switch is connected inparallel with the band stop filter circuit;

wherein controlling the RSE improvement component to be in a workingstate, includes:

controlling the control switch to be turned off.

According to some embodiments, the filter circuit is a band pass filtercircuit;

wherein a terminal of the band pass filter circuit is connected to theat least one target radiation arm of the antenna, and another terminalof the band pass filter circuit is connected to the ground point of theantenna; wherein the at least one target radiation arm is a radiationarm by which the antenna radiates the high order harmonics outward, andthe control switch is connected in series with the band pass filtercircuit;

wherein controlling the RSE improvement component to be in a workingstate, includes:

controlling the control switch to be turned on.

According to a fourth aspect of embodiments of the present disclosure,there is provided a control device. The control device is applied in aprocessing component of a terminal. An antenna module of the terminalincludes an antenna and a Radiated Spurious Emission (RSE) improvementcomponent;

wherein the control device includes:

an obtaining module configured to obtain a working frequency band of theantenna; and

a control module configured to control the RSE improvement component tobe in a working state when the working frequency band of the antenna isa target frequency band;

wherein the RSE improvement component is configured to suppress highorder harmonics generated by the antenna.

According to some embodiments, the RSE improvement component includes aradio frequency switch, a terminal of the radio frequency switch isconnected to the at least one target radiation arm of the antenna,another terminal of the radio frequency switch is connected to theground point of the antenna, and the at least one target radiation armis a radiation arm by which the antenna radiates the high orderharmonics outward;

wherein the control module is configured to control the radio frequencyswitch to be turned on.

According to some embodiments, the RSE improvement component includes aradio frequency switch, the radio frequency switch is connected inseries into the at least one target radiation arm of the antenna, andthe at least one target radiation arm is a radiation arm by which theantenna radiates the high order harmonics outward;

wherein the control module is configured to control the radio frequencyswitch to be turned off.

According to some embodiments, the RSE improvement component includes afilter circuit and a control switch, and the filter circuit isconfigured to suppress the high order harmonics;

wherein the control module is configured to control the control switchto switch the filter circuit to a working state.

According to some embodiments, the filter circuit is a band stop filtercircuit;

wherein the band stop filter circuit is connected in series into the atleast one target radiation arm of the antenna; or, a terminal of theband stop filter circuit is connected to the at least one targetradiation arm of the antenna, and another terminal of the band stopfilter circuit is connected to the feed source; wherein the at least onetarget radiation arm is a radiation arm by which the antenna radiatesthe high order harmonics outward, and the control switch is connected inparallel with the band stop filter circuit;

wherein the control module is configured to control the control switchto be turned off.

According to some embodiments, the filter circuit is a band pass filtercircuit;

wherein a terminal of the band pass filter circuit is connected to theat least one target radiation arm of the antenna, and another terminalof the band pass filter circuit is connected to the ground point of theantenna; wherein the at least one target radiation arm is a radiationarm by which the antenna radiates the high order harmonics outward, andthe control switch is connected in series with the band pass filtercircuit;

wherein the control module is configured to control the control switchto be turned on.

According to a fifth aspect of embodiments of the present disclosure,there is provided a non-transitory computer readable storage mediumhaving computer programs stored thereon, wherein the computer programsare executed by a processing component to perform steps of the methodaccording to the third aspect.

Various embodiments of the present disclosure can have one or more ofthe following advantages.

By adding an RSE improvement component to the antenna module to suppressthe high order harmonics generated by the antenna, reduction of thetransmission power of the antenna is not needed. Thus, the RSE problemcan be solved, while the communication performance of the terminal canbe ensured.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory onlyand are not restrictive of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute apart of this disclosure, illustrate embodiments consistent with thepresent disclosure and, together with the description, serve to explainprinciples of various embodiments of the present disclosure.

FIG. 1 is a schematic diagram of an antenna module according to someembodiments.

FIG. 2 illustrates a schematic diagram of an antenna resonance curve.

FIG. 3 illustrates a schematic diagram of a radio frequency switch andan antenna.

FIG. 4 illustrates another schematic diagram of a radio frequency switchand an antenna.

FIG. 5 illustrates another schematic diagram of a radio frequency switchand an antenna.

FIG. 6 illustrates another schematic diagram of a radio frequency switchand antenna.

FIG. 7 illustrates a schematic diagram of a band stop filter circuit, acontrol switch, and an antenna.

FIG. 8 illustrates another schematic diagram of a band stop filtercircuit, a control switch, and an antenna.

FIG. 9 illustrates another schematic diagram of a band stop filtercircuit, a control switch, and an antenna.

FIG. 10 illustrates a schematic diagram of a band pass filter circuit, acontrol switch, and an antenna.

FIG. 11 illustrates another schematic diagram of a band pass filtercircuit, a control switch, and an antenna.

FIG. 12 is a block diagram of a terminal according to some embodiments.

FIG. 13 is a flowchart of a control method according to someembodiments.

FIG. 14 is a block diagram of a control device according to someembodiments.

DETAILED DESCRIPTION

Reference will now be made in detail to exemplary embodiments, examplesof which are illustrated in the accompanying drawings. The followingdescription refers to the accompanying drawings in which the samenumbers in different drawings represent the same or similar elementsunless otherwise represented. The implementations set forth in thefollowing description of exemplary embodiments do not represent allimplementations consistent with the present disclosure. Instead, theyare merely examples of devices and methods consistent with aspectsrelated to the present disclosure as recited in the appended claims.

The inventors of the present disclosure have recognized that reducingthe transmission power of the antenna can affect the communicationperformance of the terminal.

The cause of RSE can be that in the case of high power, active devicesgenerate high order harmonics due to nonlinearity, especially the thirdharmonic. The harmonic is radiated to the far field, which makes the RSEof a terminal exceeds what a standard specifies. In the technicalsolutions provided by embodiments of the present disclosure, the highorder harmonics generated by the terminal antenna are suppressed, sothat the terminal satisfies the RSE requirement without reducing thetransmission power of the antenna.

In embodiments of the present disclosure, the terminal may be varioushandheld devices (such as mobile phones, tablet computers) havingwireless communication functions, in-vehicle devices, wearable devices,computing devices, smart home devices, or other processing devicesconnected to the wireless modem, and various forms of user equipment(UE), mobile station (MS), terminal device (terminal device) and thelike. For convenience of description, in the embodiments of the presentdisclosure, the devices mentioned above are collectively referred to asterminals.

The terminal can have, for example, a display such as liquid-crystaldisplay (LCD) or organic light-emitting diode (OLED) display, amicrophone, and other components such as multimedia components forinteracting with the user.

FIG. 1 is a schematic diagram of an antenna module according to someembodiments. The antenna module 10 is applied to a terminal. The antennamodule 10 can include an antenna 11 and an RSE improvement component 12.

The various device components, units, blocks, or portions may havemodular configurations, or are composed of discrete components, butnonetheless can be referred to as “modules” in general. In other words,the “components,” “portions,” “modules” or “units” referred to hereinmay or may not be in modular forms.

The antenna 11 includes a feed source, a ground point, and at least oneradiation arm. The radiation arm is a portion of the antenna 11 forradiating electromagnetic waves outward. The feed source is used to feedthe radio frequency signals to the radiation arm. For example, the feedsource can be coupled to a radio frequency circuit of the antenna 11 forreceiving radio frequency signals from the radio frequency circuit andtransmitting the radio frequency signals through the radiation arm.

In some embodiments of the present disclosure, the number of radiationarms included in the antenna 11 is not limited. For example, the antenna11 can include one radiation arm, or can include a plurality ofradiation arms. In addition, in the embodiments of the presentdisclosure, the operating frequency bands of the respective radiationarms included in the antenna 11 are not limited, and the operatingfrequency bands of the respective radiation arms can be designedaccording to actual needs. As an example, the antenna 11 includes tworadiation arms, one of the radiation arms is used for radiating a lowfrequency signal and the other one of the radiation arms is used forradiating a high frequency signal.

The RSE improvement component 12 is coupled to the antenna 11 forsuppressing the high order harmonics generated by the antenna 11 whenthe antenna 11 operates in a target frequency band. For example, thehigh order harmonics may refer to second harmonics or higher orderharmonics. When the antenna 11 operates in the target frequency band,the RSE improvement component 12 is controlled to be in a working stateto suppress the high order harmonics generated by the antenna 11. Whenthe antenna 11 operates in a non-target frequency band (i.e., when theantenna 11 operates in other frequency bands than the target frequencyband), the RSE improvement component 12 can be controlled to be in anon-working state.

Assuming that the frequency at which the terminal's transmission poweris high is Freq1, the frequency of the high order harmonics isFreq2=n×Freq1 (n>2 and n is an integer). Assuming that n is 3, Freq2 isthe frequency of the third harmonic. When the antenna 11 resonates atFreq1, the radiation efficiency of the antenna 11 for the harmonic Freq2deteriorates. Under such condition, the spurious signal cannot be easilyradiated through the antenna 11, avoiding the RSE exceeding thestandard. This ensures that the third harmonic of Freq1 cannot beradiated to the far field through the antenna 11 when the terminaltransmits high power at Freq1. In this way, the RSE performance can beoptimized without affecting the transmission of Freq1.

As an example, when the terminal works in GSM850 and GSM900, thetransmission power is very high, and it is easy to generate the problemthat the RSE exceeds the standard. When designing the antenna, thetechnician ensures that when the antenna works in the GSM850 and GSM900frequency bands, the radiation efficiency of the antenna in its thirdharmonic (about 2.5 GHz and 2.7 GHz, respectively) is very poor, and theproblem of RSE exceeding the standard can be solved. For example, whenthe terminal works in the GSM900 frequency band, the RSE improvementcomponent is controlled to shift the resonance of about 2.7 GHz, so thatthe third harmonic cannot be radiated to the far field, thereby solvingthe problem of the RSE exceeding the standard.

As shown in FIG. 2 , in the case where the RSE improvement component 12is not added to the antenna module 10, the resonance curve 21 when theantenna 11 operates in the target frequency band (for example, afrequency band of about 0.9 GHz) is shown by a broken line in thefigure. As can be seen from the resonance curve 21, the antenna 11 has asignificant third harmonic, that is, the signal at about 2.7 GHz. In thecase where the RSE improvement component 12 is added to the antennamodule 10, the resonance curve 22 when the antenna 11 operates in thetarget frequency band (such as the frequency band of about 0.9 GHz) isshown by the solid line in the FIG. 2 . As can be seen from the figure,the third harmonic is suppressed by the RSE improvement component 12 andcannot be radiated to the far field.

In the embodiments of the present disclosure, the type of the antenna 11is not limited. For example, the antenna 11 can be as a monopoleantenna, a T-shaped antenna, an inverted-F antenna (IFA), or a planarinverted-F antenna (PIFA), and so on. In addition, in the embodiments ofthe present disclosure, process for forming the antenna 11 is notlimited. For example, the antenna 11 can be a Laser Direct Structuring(LDS) antenna or a Flexible Printed Circuit (FPC) antenna, and the like.

According to some embodiments, the antenna 11 is formed on a flexiblecircuit and the RSE improvement component 12 is integrated in theflexible circuit. The flexible circuit is a special circuit in whichelectronic components are mounted on a flexible substrate. The flexiblecircuit has the characteristics of light weight, thin thickness,softness and flexibility. Forming the antenna 11 on the flexible circuitcan facilitate integration of the RSE improvement component 12 into theflexible circuit, and such arrangement is free to install and has asmall footprint.

In view of the above, in the technical solutions provided by theembodiments of the present disclosure, by adding an RSE improvementcomponent to the antenna module to suppress the high order harmonicsgenerated by the antenna, reduction of the transmission power of theantenna is not needed. Thus, the RSE problem can be solved, while thecommunication performance of the terminal can be ensured.

In the following, possible implementations of the RSE improvementcomponent 12 will be described by way of several embodiments.

In one example, the RSE improvement component 12 includes a radiofrequency (RF) switch. The radio frequency switch is an electroniccomponent used to enable on and off of a radio frequency signal.

In some implementations, as shown in FIG. 3 , the antenna 11 includes afeed source 13, a ground point 14, and at least one radiation arm(including a first radiation arm 15 a and a second radiation arm 15 b inFIG. 3 ). A terminal of the radio frequency switch 16 is connected tothe target radiation arm of the antenna 11, and another terminal of theradio frequency switch 16 is connected to the ground point 14. Thetarget radiation arm is a radiation arm by which the antenna 11 radiateshigh order harmonics outward. When the antenna 11 is operating in thetarget frequency band, the radio frequency switch 16 is turned on, andthe high order harmonics on the target radiation arm are grounded,thereby filtering the higher harmonics.

In the example of FIG. 3 , the first radiation arm 15 a can be used toradiate high frequency signals outward, and the second radiation arm 15b can be used to radiate low frequency signals or medium and highfrequency signals outward. A gap is formed between the first radiationarm 15 a and the second radiation arm 15 b. When the antenna 11 radiatesa low frequency signal such as 900 MHz outward through the secondradiation arm 15 b, high order harmonics (such as third harmonics) ofthe low frequency signal are likely to be emitted from the targetradiation arm indicated by the broken line frame in FIG. 3 . By addingthe radio frequency switch 16 between the target radiation arm and theground point 14, when the antenna 11 operates in the 900 MHz frequencyband, the radio frequency switch 16 is controlled to be turned on, andthe high order harmonics of the low frequency signal can be filteredout.

In the example of FIG. 4 , the antenna 11 includes a feed source 13, aground point 14, and three radiation arms, i.e., a first radiation arm15 a, a second radiation arm 15 b, and a third radiation arm 15 c. Thefirst radiation arm 15 a and the third radiation arm 15 c can be used toradiate high frequency signals outward, and the second radiation arm 15b can be used to radiate low frequency signals outward. When the antenna11 radiates a low frequency signal such as 900 MHz outward through thesecond radiation arm 15 b, high order harmonics (such as thirdharmonics) of the low frequency signal are likely to be emitted from thetarget radiation arm indicated by the broken line frame in FIG. 4 . Byadding the radio frequency switch 16 between the target radiation armand the ground point 14, when the antenna 11 operates in the 900 MHzfrequency band, the radio frequency switch 16 is controlled to be turnedon, and the high order harmonics of the low frequency signal can befiltered out.

In some other implementations, as shown in FIG. 5 , the antenna 11includes a feed source 13, a ground point 14, and at least one radiationarm (including a first radiation arm 15 a and a second radiation arm 15b in FIG. 5 ). The radio frequency switch 16 is connected in series intothe target radiation arm of the antenna 11. In other words, it can beconsidered that the target radiation arm is split into two parts, andthen both terminals of the radio frequency switch 16 are connected inseries between the two parts. The target radiation arm is a radiationarm of the antenna 11 radiating high order harmonics outward. When theantenna 11 is operating in the target frequency band, the radiofrequency switch 16 is turned off, and at this time, the radiation armfor radiating the high order harmonics is broken, and the higherharmonics cannot be radiated to the far field, thereby suppressing thehigh order harmonics.

In the example of FIG. 5 , the first radiation arm 15 a can be used toradiate a high frequency signal outward, and the second radiation arm 15b can be used to radiate a low frequency signal or a medium highfrequency signal outward. A gap is formed between the first radiationarm 15 a and the second radiation arm 15 b. When the antenna 11 radiatesa low frequency signal such as 900 MHz outward through the secondradiation arm 15 b, high order harmonics (such as third harmonics) ofthe low frequency signal are likely to be emitted from the targetradiation arm indicated by the broken line frame in FIG. 5 . Byconnecting the radio frequency switch 16 in series into the targetradiation arm, when the antenna 11 operates in the 900 MHz frequencyband, the radio frequency switch 16 is controlled to be disconnected,the radiation arm for radiating the high order harmonics is broken, andthe high order harmonics cannot be radiated to the far field, and thusit is possible to suppress the high order harmonics of the low frequencysignal.

In the example of FIG. 6 , the antenna 11 includes a feed source 13, aground point 14, and three radiation arms, i.e., a first radiation arm15 a, a second radiation arm 15 b, and a third radiation arm 15 c. Thefirst radiation arm 15 a and the third radiation arm 15 c can be used toradiate high frequency signals outward, and the second radiation arm 15b can be used to radiate low frequency signals outward. When the antenna11 radiates a low frequency signal such as 900 MHz outward through thesecond radiation arm 15 b, high order harmonics (such as thirdharmonics) of the low frequency signal are likely to be emitted from thetarget radiation arm indicated by the broken line frame in FIG. 6 . Byconnecting the radio frequency switch 16 in series into the targetradiation arm, when the antenna 11 operates in the 900 MHz frequencyband, the radio frequency switch 16 is controlled to be disconnected,the radiation arm for radiating the high order harmonics is broken, andthe high order harmonics cannot be radiated to the far field and thus itis possible to suppress the high order harmonics of the low frequencysignal.

In another example, the RSE improvement component 12 includes a filtercircuit and a control switch. The filter circuit is used to suppresshigh order harmonics, and the control switch is used to control theworking state of the filter circuit. For example, the control switch cancontrol the filter circuit to switch between a working state and anon-working state.

In some implementations, the filter circuit is a band stop filtercircuit. The band stop filter circuit can suppress signals in a certainfrequency band and allow signals outside the band to pass.

In one example, as shown in FIG. 7 , the antenna 11 includes a feedsource 13, a ground point 14, and at least one radiation arm (includinga first radiation arm 15 a and a second radiation arm 15 b in FIG. 7 ).The band stop filter circuit 17 is connected in series into the targetradiation arm of the antenna 11. A control switch 19 is connected inparallel with the band stop filter circuit 17. That is, it can beconsidered that the target radiation arm is split into two portions, andboth terminals of the band stop filter circuit 17 are connected inseries between the two portions. The target radiation arm is a radiationarm of the antenna 11 radiating high order harmonics outward. When theantenna 11 operates in the target frequency band, the control switch 19is turned off, the band stop filter circuit 17 is in a working state,and the band stop filter circuit 17 performs filtering of the high orderharmonics.

In another example, as shown in FIG. 8 , the antenna 11 includes a feedsource 13, a ground point 14, and at least one radiation arm (includinga first radiation arm 15 a and a second radiation arm 15 b in FIG. 8 ).A terminal of the band stop filter circuit 17 is connected to the targetradiation arm of the antenna 11, and another terminal of the band stopfilter circuit 17 is connected to the feed source 13. The control switch19 is connected in parallel with the band stop filter circuit 17. Thetarget radiation arm is a radiation arm of the antenna 11 radiating highorder harmonics outward. When the antenna 11 operates in the targetfrequency band, the control switch 19 is turned off, the band stopfilter circuit 17 is in a working state, and the band stop filtercircuit 17 performs filtering of the high order harmonics.

The two connection modes of the band stop filter circuit 17 introducedabove can be summarized as shown in FIG. 9 . In one connection mode, theband stop filter circuit 17 is connected in series into the targetradiation arm of the antenna 11. In another connection mode, a terminalof the band stop filter circuit 17 is connected to the target radiationarm of the antenna 11, and another terminal of the band stop filtercircuit 17 is connected to the feed source 13. The control switch 19 andthe band stop filter circuit 17 are connected in parallel. When thecontrol switch 19 is turned off, the band stop filter circuit 17 is in aworking state; when the control switch 19 is turned on, the band stopfilter circuit 17 is in a non-working state.

In some other implementations, the filter circuit is a band pass filtercircuit. The band pass filter circuit can allow signals in a certainfrequency band to pass, and suppress signals outside the band.

For example, as shown in FIG. 10 , the antenna 11 includes a feed source13, a ground point 14, and at least one radiation arm (including a firstradiation arm 15 a and a second radiation arm 15 b in FIG. 10 ). Aterminal of the band pass filter circuit 18 is connected to the targetradiation arm of the antenna 11, and another terminal of the band passfilter circuit 18 is connected to the ground point 14. A control switch19 is connected in series with the band pass filter circuit 18. Thetarget radiation arm is a radiation arm of the antenna 11 radiating highorder harmonics outward. When the antenna 11 is operating in the targetfrequency band, the control switch 19 is turned on, the band pass filtercircuit 18 is in a working state, and the band pass filter circuit 18grounds the high order harmonics on the target radiation arm to filterthe high order harmonics.

The connection mode of the band pass filter circuit 18 described abovecan be as shown in FIG. 11 . A terminal of the band pass filter circuit18 is connected to the target radiation arm of the antenna 11, andanother terminal of the band pass filter circuit 18 is connected to theground point 14. The control switch 19 is connected in series with theband pass filter circuit 18. When the control switch 19 is turned on,the band pass filter circuit 18 is in a working state; when the controlswitch 19 is turned off, the band pass filter circuit 18 is in anon-working state.

In view of the above, some embodiments of the present disclosure canprovide two possible implementations of the RSE improvement component.One implementation is realized by the radio frequency switch, thestructure is simple, and the circuit complexity is low. The otherimplementation is realized by the filter circuit and the control switch,and such implementation can accurately filter the high order harmonicsof the low frequency signal and allow other high frequency signals topass, which helps to meet the requirement of CA (Carrier Aggregation).

In addition, the working state of the radio frequency switch and thefilter circuit can be flexibly controlled. When the antenna operates ina low power scenario, since the spurious source is small, the radiofrequency switch or the filter circuit can be controlled to beinoperative. In this way, the antenna can operate in both the lowfrequency band and the high frequency, thereby meeting the needs of theCA.

FIG. 12 is a block diagram of a terminal according to some embodiments.As shown in FIG. 12 , the terminal 100 can include a processingcomponent 20 and an antenna module 10.

The antenna module 10 includes an antenna 11 and an RSE improvementcomponent 12. The antenna 11 includes a feed source, a ground point, andat least one radiation arm. The RSE improvement component 12 is coupledto the antenna 11 for suppressing the high order harmonics generated bythe antenna 11 when the antenna 11 operates in the target frequencyband.

The descriptions regarding the antenna module 10 can be found in theabove descriptions regarding previous embodiments and repeateddescriptions are omitted.

The processing component 20 can be a processor of the terminal 100, suchas a CPU (Central Processing Unit), or other component having computingand processing functions. The processing component 20 can be coupled tothe RSE improvement component 12 for controlling the working state ofthe RSE improvement component 12. The processing component 20 isconfigured to control the RSE improvement component 12 to be in aworking state when the antenna 11 operates in the target frequency band.

In one example, the RSE improvement component 12 includes a radiofrequency switch. A terminal of the radio frequency switch is connectedto the target radiation arm of the antenna 11, and another terminal ofthe radio frequency switch is connected to the ground point. Theprocessing component 20 is configured to control the radio frequencyswitch to be turned on when the antenna 11 operates in the targetfrequency band. In another example, the radio frequency switch isconnected in series into the target radiation arm of the antenna 11, andthe processing component 20 is configured to control the radio frequencyswitch to be turned off when the antenna 11 operates in the targetfrequency band.

In another example, the RSE improvement component includes a filtercircuit and a control switch. If the filter circuit is a band stopfilter circuit and the control switch is connected in parallel with theband stop filter circuit, the processing component 20 is configured tocontrol the control switch to be turned off when the antenna 11 operatesin the target frequency band. If the filter circuit is a band passfilter circuit and the control switch is connected in series with theband pass filter circuit, the processing component 20 is configured tocontrol the control switch to be turned on when the antenna 11 operatesin the target frequency band.

Detailed description of various possible implementations of the RSEimprovement component 12 can be found in the above descriptionsregarding the previous embodiments, and repeated descriptions areomitted here.

In view of the above, in some embodiments of the present disclosure, byadding an RSE improvement component to the antenna module to suppressthe high order harmonics generated by the antenna, reduction of thetransmission power of the antenna is not needed. Thus, the RSE problemcan be solved, while the communication performance of the terminal canbe ensured.

In addition, the processing component controls the working state of theRSE improvement component to achieve a high flexibility.

FIG. 13 is a flowchart of a control method according to someembodiments. The method is applicable to the processing component of theterminal in the above embodiments. The method can include the followingsteps:

In step 1301, a working frequency band of the antenna is obtained.

In step 1302, when the working frequency band of the antenna is thetarget frequency band, the RSE improvement component is controlled to bein a working state.

In some embodiments of the present disclosure, the terminal includes anantenna and an RSE improvement component. The descriptions regarding theantenna and the RSE improvement component can be found in the abovedescriptions regarding foregoing embodiments, and repeated descriptionsare omitted. High order harmonics are generated when the antenna of theterminal operates at the target frequency band with high power. In theembodiments of the present disclosure, the RSE improvement component isadded to the antenna module of the terminal, and when the antenna of theterminal works in the target frequency band, the RSE improvementcomponent is controlled to be in a working state to suppress the highorder harmonics generated by the antenna, thereby solving the RSEproblem.

In some embodiments, the RSE improvement component includes a radiofrequency switch. A terminal of the radio frequency switch is connectedto the target radiation arm of the antenna, and another terminal of theradio frequency switch is connected to the ground point. The targetradiation arm is a radiation arm by which the antenna radiates the highorder harmonics outward. In this way, when the working frequency band ofthe antenna is the target frequency band, the processing componentcontrols the radio frequency switch to be turned on, so as to filter thehigh order harmonics generated by the antenna.

In some other embodiments, the RSE improvement component includes aradio frequency switch. The radio frequency switch is connected inseries into the target radiation arm of the antenna. The targetradiation arm is a radiation arm by which the antenna radiates the highorder harmonics outward. In this way, when the working frequency band ofthe antenna is the target frequency band, the processing componentcontrols the radio frequency switch to be disconnected to break theradiation arm for radiating the high order harmonics, and the higherharmonic cannot be radiated to the far field, thereby solving the RSEproblem.

In yet some other embodiments, the RSE improvement component includes afilter circuit and a control switch. The filter circuit is configured tofilter high order harmonics. When the working frequency band of theantenna is the target frequency band, the processing component controlsthe above control switch to switch the filter circuit to the workingstate, so as to filter out the high order harmonics generated by theantenna.

If the filter circuit is a band stop filter circuit, the band stopfilter circuit is connected in series into the target radiation arm ofthe antenna; or one terminal of the band stop filter circuit isconnected to the target radiation arm of the antenna, the other terminalof the band stop filter circuit is connected to the feed point of theantenna. The target radiation arm is a radiation arm by which theantenna radiates high order harmonics outward. The control switch isconnected in parallel with the band stop filter circuit. When theworking frequency band of the antenna is the target frequency band, theprocessing component controls the above-mentioned control switch to bedisconnected (i.e., turned off), so that the high order harmonicsgenerated by the antenna can be filtered.

If the filter circuit is a band pass filter circuit, one terminal of theband pass filter circuit is connected to the target radiation arm of theantenna, and the other terminal of the band pass filter circuit isconnected to the ground point of the antenna. The target radiation armis a radiation arm by which the antenna radiates high order harmonics.The control switch is connected in series with the band pass filtercircuit. When the working frequency band of the antenna is the targetfrequency band, the processing component controls the above-mentionedcontrol switch to be turned on, so that the high order harmonicsgenerated by the antenna can be filtered.

For details of the method embodiments, reference can be made to theabove apparatus examples.

In view of the above, in the technical solutions provided by theembodiments of the present disclosure, by adding an RSE improvementcomponent to the antenna module to suppress the high order harmonicsgenerated by the antenna, reduction of the transmission power of theantenna is not needed. Thus, the RSE problem can be solved, while thecommunication performance of the terminal can be ensured.

In addition, the working state of the RSE improvement component can beflexibly controlled. When the antenna operates in a low power scenario,since the spurious source is small, the RSE improvement component can becontrolled to be inoperative, so that the antenna can operates in bothlow frequency band and high frequency band at the same time so as tomeet the needs of CA.

In some embodiments, devices can be provided to implement the methodembodiments of the present disclosure. For details not disclosed in thedevice embodiments, refer to the previous description regarding themethod or product embodiments.

FIG. 14 is a block diagram of a control device according to someembodiments. The device has a function of implementing theabove-described method embodiments. The function may be implemented byhardware including processing circuits, software, or a combinationthereof. The device may be the processing component described above, orthe device may be disposed in the processing component. As shown in FIG.14 , the device 1400 can include an obtaining module 1410 and a controlmodule 1420.

The obtaining module 1410 is configured to obtain a working frequencyband of the antenna.

The control module 1420 is configured to control the RSE improvementcomponent to be in a working state when the working frequency band ofthe antenna is the target frequency band.

The RSE improvement component is configured to suppress high harmonicsgenerated by the antenna.

In view of the above, in the technical solutions provided by theembodiments of the present disclosure, by adding an RSE improvementcomponent to the antenna module to suppress the high order harmonicsgenerated by the antenna, reduction of the transmission power of theantenna is not needed. Thus, the RSE problem can be solved, while thecommunication performance of the terminal can be ensured.

In some embodiments, the RSE improvement component includes a radiofrequency switch. A terminal of the radio frequency switch is connectedto the target radiation arm of the antenna, and another terminal of theradio frequency switch is connected to the ground point of the antenna.The target radiation arm is a radiation arm by which the antennaradiates the high order harmonics.

The control module 1420 is configured to control the radio frequencyswitch to be turned on.

In some embodiments, the RSE improvement component includes a radiofrequency switch. The radio frequency switch is connected in series intothe target radiation arm of the antenna. The target radiation arm is aradiation arm by which the antenna radiates the high order harmonics.

The control module 1420 is configured to control the radio frequencyswitch to be turned off.

In some embodiments, the RSE improvement component includes a filtercircuit and a control switch. The filter circuit is configured tosuppress the high order harmonics.

The control module 1420 is configured to control the control switch toswitch the filter circuit to a working state.

In some embodiments, the filter circuit is a band stop filter circuit.The band stop filter circuit is connected in series into the targetradiation arm of the antenna; or a terminal of the band stop filtercircuit is connected to the target radiation arm of the antenna, andanother terminal of the band stop filter circuit is connected to thefeed point of the antenna. The target radiation arm is a radiation armby which the antenna radiates the high order harmonics outward. Thecontrol switch is connected in parallel with the band stop filtercircuit.

The control module 1420 is configured to control the control switch tobe turned off.

In some embodiments, the filter circuit is a band pass filter circuit. Aterminal of the band pass filter circuit is connected to the targetradiation arm of the antenna, and another terminal of the band passfilter circuit is connected to the ground point of the antenna. Thetarget radiation arm is a radiation arm by which the antenna radiatesthe high order harmonics. The control switch is connected in series withthe band pass filter circuit.

The control module 1420 is configured to control the control switch tobe turned on.

It should be noted that the division of the functional modules describedabove when the device provided by the foregoing embodiments implementsits function is only an example, and in actual applications, thefunctions may be completed by different functional modules according toactual needs. The structure of the device is divided into differentfunctional modules to complete all or part of the functions describedabove.

With regard to the device embodiments, the specific manner in which therespective modules perform the operations has been described in detailin the method embodiments, and repeated descriptions will be omitted.

Embodiments of the present disclosure also provide a non-transitorycomputer readable storage medium having stored thereon computerprograms. The computer programs are executed by a processing component(such as a processor) of a terminal to implement the above controlmethods.

According to some embodiments, the non-transitory computer readablestorage medium can be a ROM (Read-Only Memory), a RAM (Random AccessMemory), a CD-ROM, a magnetic tape, a floppy disk, or an optical datastorage device, or the like.

It should be understood that “a plurality of” mentioned herein means twoor more. The term “and/or” describes the association relationship ofassociated objects, indicating that there may be three relationships.For example, A and/or B may indicate that there are three cases: Aexists only, both A and B exist, and B exists only. The character “I”generally indicates that the contextual objects are in an “or”relationship. As used herein, “connected” may mean directly connected orindirectly connected.

The operations described in this disclosure can be implemented asoperations performed by a data processing apparatus on data stored onone or more computer-readable storage devices or received from othersources.

While this specification contains many specific implementation details,these should not be construed as limitations on the scope of any claims,but rather as descriptions of features specific to particularimplementations. Certain features that are described in thisspecification in the context of separate implementations can also beimplemented in combination in a single implementation. Conversely,various features that are described in the context of a singleimplementation can also be implemented in multiple implementationsseparately or in any suitable subcombination.

Moreover, although features can be described above as acting in certaincombinations and even initially claimed as such, one or more featuresfrom a claimed combination can in some cases be excised from thecombination, and the claimed combination can be directed to asubcombination or variation of a subcombination.

Similarly, while operations are depicted in the drawings in a particularorder, this should not be understood as requiring that such operationsbe performed in the particular order shown or in sequential order, orthat all illustrated operations be performed, to achieve desirableresults. In certain circumstances, multitasking and parallel processingcan be advantageous. Moreover, the separation of various systemcomponents in the implementations described above should not beunderstood as requiring such separation in all implementations, and itshould be understood that the described program components and systemscan generally be integrated together in a single software product orpackaged into multiple software products.

As such, particular implementations of the subject matter have beendescribed. Other implementations are within the scope of the followingclaims. In some cases, the actions recited in the claims can beperformed in a different order and still achieve desirable results. Inaddition, the processes depicted in the accompanying figures do notnecessarily require the particular order shown, or sequential order, toachieve desirable results. In certain implementations, multitasking orparallel processing can be utilized. Some other embodiments of thepresent disclosure can be available to those skilled in the art uponconsideration of the specification and practice of the variousembodiments disclosed herein.

The present application is intended to cover any variations, uses, oradaptations of the present disclosure following general principles ofthe present disclosure and include the common general knowledge orconventional technical means in the art without departing from thepresent disclosure. The specification and examples can be shown asillustrative only, and the true scope and spirit of the disclosure areindicated by the following claims. In the present disclosure, it is tobe understood that the terms “bottom,” “inside,” and other orientationor positional relationships are based on example orientationsillustrated in the drawings, and are merely for the convenience of thedescription of some embodiments, rather than indicating or implying thedevice or component being constructed and operated in a particularorientation. Therefore, these terms are not to be construed as limitingthe scope of the present disclosure.

It will be understood that, although the terms first, second, etc. canbe used herein to describe various elements, these elements should notbe limited by these terms. These terms are only used to distinguish oneelement from another. For example, a first element could be termed asecond element, and, similarly, a second element could be termed a firstelement, without departing from the scope of the present disclosure. Asused herein, the term “and/or” includes any and all combinations of oneor more of the associated listed items.

It will be understood that when an element such as a layer, region, orother structure is referred to as being “on” or extending “onto” anotherelement, it can be directly on or extend directly onto the other elementor intervening elements can also be present. In contrast, when anelement is referred to as being “directly on” or extending “directlyonto” another element, there are no intervening elements present.

Likewise, it will be understood that when an element such as a layer,region, or substrate is referred to as being “over” or extending “over”another element, it can be directly over or extend directly over theother element or intervening elements can also be present. In contrast,when an element is referred to as being “directly over” or extending“directly over” another element, there are no intervening elementspresent. It will also be understood that when an element is referred toas being “connected” or “coupled” to another element, it can be directlyconnected or coupled to the other element or intervening elements can bepresent. In contrast, when an element is referred to as being “directlyconnected” or “directly coupled” to another element, there are nointervening elements present.

Relative terms such as “below” or “above” or “upper” or “lower” or“vertical” or “horizontal” can be used herein to describe a relationshipof one element, layer, or region to another element, layer, or region asillustrated in the drawings. It will be understood that these terms andthose discussed above are intended to encompass different orientationsof the device in addition to the orientation depicted in the drawings.

The terminology used herein is for the purpose of describing particularembodiments only and is not intended to be limiting of the disclosure.As used herein, the singular forms “a,” “an,” and “the” are intended toinclude the plural forms as well, unless the context clearly indicatesotherwise. It will be further understood that the terms “comprises,”“comprising,” “includes,” and/or “including” when used herein specifythe presence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this disclosure belongs. It willbe further understood that terms used herein should be interpreted ashaving a meaning that is consistent with their meaning in the context ofthis specification and the relevant art and will not be interpreted inan idealized or overly formal sense unless expressly so defined herein.

In the description of the present disclosure, the terms “someembodiments,” “example,” and the like may indicate a specific featuredescribed in connection with the embodiment or example, a structure, amaterial or feature included in at least one embodiment or example. Inthe present disclosure, the schematic representation of the above termsis not necessarily directed to the same embodiment or example.

Moreover, the particular features, structures, materials, orcharacteristics described may be combined in a suitable manner in anyone or more embodiments or examples. In addition, various embodiments orexamples described in the specification, as well as features of variousembodiments or examples, may be combined and reorganized.

It is intended that the specification and embodiments be considered asexamples only. Other embodiments of the disclosure will be apparent tothose skilled in the art in view of the specification and drawings ofthe present disclosure. That is, although specific embodiments have beendescribed above in detail, the description is merely for purposes ofillustration. It should be appreciated, therefore, that many aspectsdescribed above are not intended as required or essential elementsunless explicitly stated otherwise.

Various modifications of, and equivalent acts corresponding to, thedisclosed aspects of the example embodiments, in addition to thosedescribed above, can be made by a person of ordinary skill in the art,having the benefit of the present disclosure, without departing from thespirit and scope of the disclosure defined in the following claims, thescope of which is to be accorded the broadest interpretation so as toencompass such modifications and equivalent structures.

What is claimed is:
 1. An antenna module, applied to a terminal, whereinthe antenna module comprises an antenna and a Radiated Spurious Emission(RSE) improvement component; wherein: the antenna comprises a feedsource, a ground point, and at least one radiation arm; the RSEimprovement component is coupled to the antenna for suppressing highorder harmonics generated by the antenna when the antenna operates in atarget frequency band; wherein the RSE improvement component comprises aradio frequency switch, a terminal of the radio frequency switch isconnected to the at least one target radiation arm of the antenna, andanother terminal of the radio frequency switch is connected to theground point; or, the radio frequency switch is connected in series intothe at least one target radiation arm of the antenna; wherein the atleast one target radiation arm is a radiation arm by which the antennaradiates the high order harmonics outward.
 2. The antenna moduleaccording to claim 1, wherein the antenna is formed on a flexiblecircuit, and the RSE improvement component is integrated in the flexiblecircuit.
 3. A terminal, comprising a processing circuit and an antennamodule, wherein the antenna module comprises an antenna and a RadiatedSpurious Emission (RSE) improvement component; wherein: the antennacomprises a feed source, a ground point, and at least one radiation arm;the RSE improvement component is coupled to the antenna for suppressinghigh order harmonics generated by the antenna when the antenna operatesin a target frequency band; the processing circuit is configured tocontrol the RSE improvement component to be in a working state when theantenna operates in the target frequency band; wherein the RSEimprovement component comprises a radio frequency switch, a terminal ofthe radio frequency switch is connected to the at least one targetradiation arm of the antenna, another terminal of the radio frequencyswitch is connected to the ground point, and the at least one targetradiation arm is a radiation arm by which the antenna radiates the highorder harmonics outward; wherein the processing circuit is configured tocontrol the radio frequency switch to be turned on when the antennaoperates in the target frequency band; or wherein the radio frequencyswitch is connected in series into the at least one target radiation armof the antenna, the at least one target radiation arm is a radiation armby which the antenna radiates the high order harmonics outward, and theprocessing circuit is configured to control the radio frequency switchto be turned off when the antenna operates in the target frequency band.4. The terminal according to claim 3, wherein the antenna is formed on aflexible circuit, and the RSE improvement component is integrated in theflexible circuit.
 5. A control method, applied in a processing circuitof a terminal, wherein an antenna module of the terminal comprises anantenna and a Radiated Spurious Emission (RSE) improvement component;wherein the method comprises: obtaining a working frequency band of theantenna; and controlling the RSE improvement component to be in aworking state when the working frequency band of the antenna is a targetfrequency band; wherein the RSE improvement component is configured tosuppress high order harmonics generated by the antenna; and wherein theRSE improvement component comprises a radio frequency switch, a terminalof the radio frequency switch is connected to the at least one targetradiation arm of the antenna, another terminal of the radio frequencyswitch is connected to the ground point of the antenna, and the at leastone target radiation arm is a radiation arm by which the antennaradiates the high order harmonics outward.
 6. The control methodaccording to claim 5, wherein the controlling the RSE improvementcomponent to be in a working state comprises: controlling the radiofrequency switch to be turned on.
 7. The control method according toclaim 5, wherein the antenna is formed on a flexible circuit, and theRSE improvement component is integrated in the flexible circuit.